I crafted a lesser rune and tuned once for 5 gems, then created a second lesser and tuned once again. Otherwise, you spend 15 gems tuning the same lesser. Just saved you 33%. Better than switching to Geico.

Ok so Day 5, Quest 3, yeah you just have to salvage a bunch of runes until you get enough of the binders. Might take 2 dozen, depending on luck. If you need to, quick loot a few dungeons to get some extra runes for salvaging.